Two-way stretching nylon film capable of being heat sealed and preparation method thereof
A biaxially stretched nylon and film technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of increasing product production costs and restricting nylon films, etc., to achieve convenient preparation, simple material composition, heat sealing high intensity effect
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Embodiment 1
[0034] Heat-sealable biaxially oriented nylon film is composed of the following raw materials: the skin layer 1 is composed of 70% nylon 6 / 66 / 1010 terpolymer nylon and 30% nylon-6 resin; the core layer is 100% nylon-6 Resin composition; surface layer 2 is composed of 0.5% anti-blocking agent, 0.2% slip agent and 99.3% nylon-6 resin.
[0035] Its preparation steps are as follows:
[0036] (1) mixing copolymerized nylon and nylon-6 resin in proportion, melt blending, extruding, and granulating through a twin-screw extruder to obtain a heat-sealable master batch for subsequent use;
[0037] (2) Put the heat-sealable masterbatch obtained in (1) into the first auxiliary machine of the tape casting machine to make the surface layer 1; put nylon-6 resin and other materials into the main machine and the second auxiliary machine in proportion, respectively, Make core layer and surface layer 2;
[0038] (3) The materials of each layer in (2) are melted and co-extruded and cast to obta...
Embodiment 2
[0042] Heat-sealable biaxially oriented nylon film is composed of the following raw materials: the skin layer 1 is composed of 80% nylon 6 / 1010 / 1212 terpolymer nylon and 20% nylon-6 resin; the core layer is 100% nylon-6 Resin composition; surface layer 2 is composed of 0.6% anti-blocking agent, 0.3% slip agent and 99.1% nylon-6 resin.
[0043] Its preparation steps are as follows:
[0044] (1) mixing copolymerized nylon and nylon-6 resin in proportion, melt blending, extruding, and granulating through a twin-screw extruder to obtain a heat-sealable master batch for subsequent use;
[0045] (2) Put the heat-sealable masterbatch obtained in (1) into the first auxiliary machine of the tape casting machine to make the surface layer 1; put nylon-6 resin and other materials into the main machine and the second auxiliary machine in proportion, respectively, Make core layer and surface layer 2;
[0046] (3) The materials of each layer in (2) are melted and co-extruded and cast to ob...
Embodiment 3
[0050]The heat-sealable biaxially oriented nylon film is composed of the following raw materials: the surface layer 1 is composed of 90% nylon 6 / 66 / 1010 terpolymer nylon and 10% nylon-6 resin; the core layer is composed of 100% nylon-6 Resin composition; surface layer 2 is composed of 0.7% anti-blocking agent, 0.3% slip agent and 99% nylon-6 resin.
[0051] Its preparation steps are as follows:
[0052] (1) mixing copolymerized nylon and nylon-6 resin in proportion, melt-blending, extruding, and granulating through a twin-screw extruder to obtain a heat-sealable master batch for subsequent use;
[0053] (2) put the heat-sealable masterbatch obtained in (1) into the first auxiliary machine of the casting machine to make the surface layer 1; put the nylon-6 resin and other materials into the main machine and the second auxiliary machine in proportion, respectively, Make core layer and surface layer 2;
[0054] (3) the material of each layer in (2) is melted and co-extruded and...
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